The KRYTAC Rotary Hop Unit + Rubber is a direct replacement hop assembly for M4 and AR15 airsoft rifles. Designed for players seeking better accuracy and hop-up consistency, this rotary system offers fine-tuned backspin control across all engagement distances.
Key Features
- Rotary hop adjustment – smooth, repeatable dial control for precise backspin tuning
- Quality rubber bucking – reinforced HOP rubber for consistent performance and durability
- M4/AR15 compatibility – drops straight into standard M4 gearbox receivers
- Polymer construction – lightweight, rigid design minimises wobble and play
- Black finish – modern, professional appearance across all build styles
Real-World Use Cases
Whether you’re running CQB drills, woodland skirmishes, or MILSIM operations, hop consistency directly impacts your hit probability. KRYTAC’s rotary system is ideal for players upgrading from worn bucking or seeking repeatable zeroing across temperature changes. The dial adjustment makes field tuning straightforward—no disassembly required between matches.
Technical Specifications
- Hop-up type: Rotary adjustment mechanism
- Material: Polymer housing with rubber HOP bucking
- Colour: Black
- Compatibility: M4/AR15 AEG gearbox receivers
- Power source: Electric (passive hop component)
- Installation: Drop-in replacement
Compatibility & Upgrades
This hop unit suits any standard M4 or AR15-pattern AEG with a compatible gearbox. It pairs well with precision inner barrels, quality BBs, and upgraded bucking washers for maximum range performance. Confirm your receiver’s hop-up mounting before purchase.
UK Legal & Site Notes
As a passive hop component, this unit carries no legal restrictions. It is a direct replacement part and does not affect FPS output or legal compliance. Always check your skirmish site’s approved parts list.
Upgrade your M4 or AR15 AEG’s accuracy today with KRYTAC’s proven rotary hop unit. Order online at Airsoftdirect and enjoy fast UK delivery.









